first of all, y wpuld u cut come off your bars? the wider the bars, the better, next if anyone gets extensions get longer cables and DONT get the powermadd extension or any other extension with a junction box...3rd of all, wooly viper, yamahas can be extended 2.5 to 3 inches without extensions and if anyone is in the market fer a riser, DOnt get a block riser, they just extend the bars into your chest, get an articulating riser from powermadd or sportech, i have one of each...one 3 inch sportech on the venture and a 5.5 inch powermadd on the 97 MM .... sorry but i dnt have a viper or i wouold post pics bit just throwin out info! lol